Self Assessment:

31 July 2010 - 2nd payment on account for 2009/10

5 October 2010 - Deadline for notifying HMRC of new sources of income if no tax return issued for 2009/10

31 October 2010 - Deadline for submission of 2009/10 paper returns

31 January 2011 - Deadline for filing electronic returns for 2009/10. Balancing payment for 2009/10 and 1st payment on account for 2010/11